Author: | Ash, S. H. |
---|---|
Additional Authors: | Westfield, James. |
Year: | 1946 |
Document Type: | USBI |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.27:7342 |
Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 7342 |
Subjects: | Subsidences (Earth movements) |
Anthracite coal--Pennsylvania | |
Mining engineering | |
Coal mines and mining--Pennsylvania | |
Link: | https://hdl.handle.net/2027/mdp.39015074127658 |